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Multi Reflection of Lamb Wave Emission in an Acoustic Waveguide Sensor

Recently, an acoustic waveguide sensor based on multiple mode conversion of surface acoustic waves at the solid—liquid interfaces has been introduced for the concentration measurement of binary and ternary mixtures, liquid level sensing, investigation of spatial inhomogenities or bubble detection. I...

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Autores principales: Schmitt, Martin, Olfert, Sergei, Rautenberg, Jens, Lindner, Gerhard, Henning, Bernd, Reindl, Leonhard Michael
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Molecular Diversity Preservation International (MDPI) 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3658713/
https://www.ncbi.nlm.nih.gov/pubmed/23447010
http://dx.doi.org/10.3390/s130302777
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author Schmitt, Martin
Olfert, Sergei
Rautenberg, Jens
Lindner, Gerhard
Henning, Bernd
Reindl, Leonhard Michael
author_facet Schmitt, Martin
Olfert, Sergei
Rautenberg, Jens
Lindner, Gerhard
Henning, Bernd
Reindl, Leonhard Michael
author_sort Schmitt, Martin
collection PubMed
description Recently, an acoustic waveguide sensor based on multiple mode conversion of surface acoustic waves at the solid—liquid interfaces has been introduced for the concentration measurement of binary and ternary mixtures, liquid level sensing, investigation of spatial inhomogenities or bubble detection. In this contribution the sound wave propagation within this acoustic waveguide sensor is visualized by Schlieren imaging for continuous and burst operation the first time. In the acoustic waveguide the antisymmetrical zero order Lamb wave mode is excited by a single phase transducer of 1 MHz on thin glass plates of 1 mm thickness. By contact to the investigated liquid Lamb waves propagating on the first plate emit pressure waves into the adjacent liquid, which excites Lamb waves on the second plate, what again causes pressure waves traveling inside the liquid back to the first plate and so on. The Schlieren images prove this multi reflection within the acoustic waveguide, which confirms former considerations and calculations based on the receiver signal. With this knowledge the sensor concepts with the acoustic waveguide sensor can be interpreted in a better manner.
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spelling pubmed-36587132013-05-30 Multi Reflection of Lamb Wave Emission in an Acoustic Waveguide Sensor Schmitt, Martin Olfert, Sergei Rautenberg, Jens Lindner, Gerhard Henning, Bernd Reindl, Leonhard Michael Sensors (Basel) Article Recently, an acoustic waveguide sensor based on multiple mode conversion of surface acoustic waves at the solid—liquid interfaces has been introduced for the concentration measurement of binary and ternary mixtures, liquid level sensing, investigation of spatial inhomogenities or bubble detection. In this contribution the sound wave propagation within this acoustic waveguide sensor is visualized by Schlieren imaging for continuous and burst operation the first time. In the acoustic waveguide the antisymmetrical zero order Lamb wave mode is excited by a single phase transducer of 1 MHz on thin glass plates of 1 mm thickness. By contact to the investigated liquid Lamb waves propagating on the first plate emit pressure waves into the adjacent liquid, which excites Lamb waves on the second plate, what again causes pressure waves traveling inside the liquid back to the first plate and so on. The Schlieren images prove this multi reflection within the acoustic waveguide, which confirms former considerations and calculations based on the receiver signal. With this knowledge the sensor concepts with the acoustic waveguide sensor can be interpreted in a better manner. Molecular Diversity Preservation International (MDPI) 2013-02-27 /pmc/articles/PMC3658713/ /pubmed/23447010 http://dx.doi.org/10.3390/s130302777 Text en © 2013 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Schmitt, Martin
Olfert, Sergei
Rautenberg, Jens
Lindner, Gerhard
Henning, Bernd
Reindl, Leonhard Michael
Multi Reflection of Lamb Wave Emission in an Acoustic Waveguide Sensor
title Multi Reflection of Lamb Wave Emission in an Acoustic Waveguide Sensor
title_full Multi Reflection of Lamb Wave Emission in an Acoustic Waveguide Sensor
title_fullStr Multi Reflection of Lamb Wave Emission in an Acoustic Waveguide Sensor
title_full_unstemmed Multi Reflection of Lamb Wave Emission in an Acoustic Waveguide Sensor
title_short Multi Reflection of Lamb Wave Emission in an Acoustic Waveguide Sensor
title_sort multi reflection of lamb wave emission in an acoustic waveguide sensor
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3658713/
https://www.ncbi.nlm.nih.gov/pubmed/23447010
http://dx.doi.org/10.3390/s130302777
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